REVIEW: CHEMICAL REACTIONS AND CONSERVATION OF MASS

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Across
  1. 3. a chemical equation that has the same number and kinds of atoms on both sides
  2. 5. kind of substance that is made by humans; it come from natural substances
  3. 7. substance that forms as a result of a chemical reaction
  4. 8. a solid that sometimes forms during a chemical reaction; it is a sign that a chemical reaction has occurred
  5. 9. substance that exists before a chemical reaction begins
  6. 10. a process that produces chemical change, resulting in new substances that have properties different from those of the original substances
Down
  1. 1. a kind of chemical reaction in which more heat energy is absorbed to break the reactants' bonds, than is released in forming the products; temperature goes down
  2. 2. this law states that mass (atoms) cannot be created or destroyed in a chemical reaction
  3. 4. shorthand form for writing what reactants are used and what products are formed in a chemical reaction
  4. 6. a kind of chemical reaction in which more heat energy is released when the products are formed, than is used to break the reactants' bonds; temperature goes up